import { afterEach, describe, expect, it, vi } from "vitest";
import {
  emitAlert,
  getEmittedAlerts,
  resetAlertState,
} from "@/services/alert/webhook";
import { enableTestModeEnv, disableTestModeEnv } from "@/services/test/test-mode-env";

describe("alert webhook", () => {
  afterEach(() => {
    resetAlertState();
    delete process.env.ALERT_WEBHOOK_URL;
    disableTestModeEnv();
    vi.unstubAllGlobals();
  });

  it("records in memory when webhook url empty", async () => {
    enableTestModeEnv();
    const sent = await emitAlert({
      key: "imap.consecutive_fail",
      title: "IMAP 连续拉取失败",
      severity: "error",
      fields: { consecutiveFail: 3 },
    });
    expect(sent).toBe(true);
    expect(getEmittedAlerts()).toHaveLength(1);
    expect(getEmittedAlerts()[0].title).toMatch(/IMAP/);
  });

  it("dedups same key within window", async () => {
    enableTestModeEnv();
    await emitAlert({ key: "cc.auth_expired", title: "a", severity: "error" });
    const second = await emitAlert({
      key: "cc.auth_expired",
      title: "b",
      severity: "error",
    });
    expect(second).toBe(false);
    expect(getEmittedAlerts()).toHaveLength(1);
  });

  it("POSTs JSON when ALERT_WEBHOOK_URL is set", async () => {
    enableTestModeEnv();
    process.env.ALERT_WEBHOOK_URL = "https://example.test/hook";
    const { resetEnvCache } = await import("@/lib/env");
    resetEnvCache();
    const fetchMock = vi.fn().mockResolvedValue({ ok: true });
    vi.stubGlobal("fetch", fetchMock);
    resetAlertState();
    await emitAlert({
      key: "cc.login_fail",
      title: "CC 登录失败",
      severity: "error",
      fields: { code: 401 },
    });
    expect(fetchMock).toHaveBeenCalledTimes(1);
    const [url, init] = fetchMock.mock.calls[0] as [string, RequestInit];
    expect(url).toBe("https://example.test/hook");
    expect(init.method).toBe("POST");
    delete process.env.ALERT_WEBHOOK_URL;
    resetEnvCache();
  });
});